Archaeopteryx Fossil Reveals Efficient Beak for Flight

New analysis of the oldest known bird-like dinosaur sheds light on its feeding adaptations and evolution of flight.

Published on Feb. 28, 2026

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A remarkably well-preserved fossil of Archaeopteryx, the earliest known dinosaur classified as a bird, has revealed previously unseen features of its skull that suggest it possessed specialized adaptations for efficient feeding to support its ability to fly. Researchers utilized advanced imaging techniques to identify structures like oral papillae, a tongue bone, and a sensitive bill-tip organ - features also found in modern birds and thought to aid in manipulating and consuming high-energy food sources.

Why it matters

The discovery of these feeding-related adaptations in Archaeopteryx supports the hypothesis that the evolution of efficient feeding played a crucial role in the development of flight in early birds. Understanding how Archaeopteryx and its relatives were able to obtain the necessary energy for powered flight provides important insights into a pivotal moment in the history of life on Earth.

The details

Paleontologists analyzed a fossil of Archaeopteryx acquired by the Field Museum in Chicago in 2022, utilizing X-ray scans and ultraviolet imaging to uncover previously unknown structures within its skull. The team, led by Jingmai O'Connor, identified three key features: a series of bumps on the roof of the mouth resembling oral papillae found in modern birds, a tongue bone enhancing maneuverability, and small tunnels in the beak suggesting a sensitive bill-tip organ also present in contemporary birds - all adaptations thought to aid in foraging and consuming food efficiently.

  • Archaeopteryx lived during the Late Jurassic period, approximately 150.8 to 148.5 million years ago.
  • The fossil analyzed in this study was acquired by the Field Museum in Chicago in 2022.

The players

Jingmai O'Connor

A paleontologist at the Field Museum who led the research team studying the Archaeopteryx fossil.

Field Museum

A natural history museum in Chicago that acquired a remarkably well-preserved Archaeopteryx fossil in 2022.

Michael Pittman

A paleontologist at the Chinese University of Hong Kong who commented on the significance of the study's findings.

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What they’re saying

“In the evolution of birds, in response to their increased caloric demands, they evolve a mobile tongue … and they evolve these oral papillae. Like in living birds, these are structures that work together.”

— Jingmai O'Connor, Paleontologist, Field Museum (The Innovation)

“I think it is an important study because prior to it, people hadn't been looking for these sorts of structures. They have three features proposed in the specimen that in modern birds are associated with efficient feeding.”

— Michael Pittman, Paleontologist, Chinese University of Hong Kong (The Innovation)

What’s next

Further research, including the analysis of additional Archaeopteryx fossils, will be needed to definitively confirm the link between these feeding adaptations and the development of flight in Archaeopteryx and its relatives.

The takeaway

The discovery of specialized feeding structures in the Archaeopteryx fossil provides important evidence supporting the hypothesis that the evolution of efficient foraging and food processing played a crucial role in the emergence of powered flight in early birds, a pivotal moment in the history of life on Earth.